Over the years you've collected a lot of fonts, and in the past you've made a smart decision to use MainType to organize and maintain your font collection.
Now you want to safe a copy of your collection because you don't want to lose it in case your hard drive crashes, or if someone steals your PC. Or maybe you've just bought a new computer, and you want to copy your font collection.
Either way, it's plain easy to copy your fonts. First find out the root folder of your Groups folder:
Open MainType, select Tools on the main menu, and then click Options. You'll see something like:
C:\Users\<yourname>\Documents\My Font Groups
Now you know the folder that contains all your font groups, you can easily make a copy of your whole font collection.
To restore your font collection, or to copy it to a new PC, just install MainType, and use similar steps as described above to find out the root of the groups folder. Then copy the font collection to this folder, and MainType will instantly recognize and process the group folders and the available fonts.